COVID-19 test result required before the employees can fly to Canada, saying the cost of the tests in certain countries are proving to be a barrier for some.The Ontario Federation of Agriculture, which represents thousands of farmers across the province, said it has been working with Ottawa to find ways to accommodate migrant workers travelling to Canada for jobs in the agriculture sector.Keith Currie, director of the group and a farmer in Collingwood, Ont., said farmers have recently been discussing the pre-departure tests, which can cost hundreds of dollars in some countries and may also be hard to access.“(The travel requirements) put in place, we understand this is for the right reasons, for health reasons, but how can we alleviate some.